气候变化领域集成服务门户(CCPortal): Anthropogenic and natural impacts in the marine area of influence of the Grijalva – Usumacinta River (Southern Gulf of Mexico) during the last 45 years

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DOI	10.1016/j.marpolbul.2020.111245
	Anthropogenic and natural impacts in the marine area of influence of the Grijalva – Usumacinta River (Southern Gulf of Mexico) during the last 45 years
	Machain-Castillo M.L.; Ruiz-Fernández A.C.; Alonso-Rodríguez R.; Sanchez-Cabeza J.A.; Gío-Argáez F.R.; Rodríguez-Ramírez A.; Villegas-Hernández R.; Mora-García A.I.; Fuentes-Sánchez A.P.; Cardoso-Mohedano J.G.; Hernández-Becerril D.U.; Esqueda-Lara K.; Santiago-Pérez S.; Gómez-Ponce M.A.; Pérez-Bernal L.H.
发表日期	2020
ISSN	0025326X
卷号	156
英文摘要	The development of the Grijalva-Usumacinta river basin exerts modifications on its discharge area. A sediment core was studied to reconstruct environmental changes and trace element contamination status during the past 45 years. 210Pb-derived mass accumulation rates indicate higher sediment input to the area since 1995, related to increased precipitation and floodings in the catchment area. Sediments show finer particles from the late 1970s on, likely related to dams construction upriver and/or land use changes. Heavy metal enrichment factors (EF < 2) suggest minimum contamination. Benthic foraminifera and redox-sensitive - elements (As, Ba, Co, Cr, Cu, Ni, Pb, V and Zn) indicate the sediments before 2000 were deposited under oxygenated conditions. Afterwards, environmental conditions changed and benthic foraminifera and dinocysts assemblages changed suggesting eutrophication and lower oxygen conditions during the last 20 years. Monitoring should be continued to assess eutrophication/hypoxic/pollution trends that could become deleterious to the marine biota. © 2020 Elsevier Ltd
英文关键词	210Pb dating; Benthic foraminifera; Dinocysts; Eutrophication; Marine sediments; Trace metal contamination
语种	英语
scopus关键词	Catchments; Eutrophication; Heavy metals; Land use; River pollution; Trace elements; Benthic foraminifera; Environmental change; Environmental conditions; Finer particles; Heavy metal enrichments; Land-use change; Mass accumulation rates; Redox sensitives; Sediments; arsenic; barium; chromium; cobalt; copper; heavy metal; lead 210; nickel; oxygen; river water; trace element; vanadium; zinc; heavy metal; anthropogenic source; concentration (composition); environmental factor; human activity; marine ecosystem; sediment pollution; trace element; aquatic species; Article; benthos; catchment area; concentration (parameter); dinoflagellate; elemental analysis; environmental enrichment; environmental impact; environmental monitoring; eutrophication; flooding; foraminifer; geographic distribution; land use; marine environment; Mexico; nonhuman; river; sediment; water analysis; water contamination; Gulf of Mexico; river; water pollutant; Grijalva Basin; Mexico [North America]; Foraminifera; Environmental Monitoring; Geologic Sediments; Gulf of Mexico; Metals, Heavy; Rivers; Water Pollutants, Chemical
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148875
作者单位	Unidad Académica de Procesos Oceánicos y Costeros, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria04510, Mexico; Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Calz. Joel Montes Camarena s/n, Col. Playa Sur, Mazatlán, 82040, Mexico; Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Mexico; Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria04510, Mexico; Instituto Tecnológico de Bahía Banderas, Crucero a Punta Mita s/n, Bahía Banderas, Nayarit C.P. 63734, Mexico; Estación el Carmen, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Carretera Carmen-Puerto Real km. 9.5, Ciudad del Carmen, Campeche 24157, Mexico; Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universida...
推荐引用方式 GB/T 7714	Machain-Castillo M.L.,Ruiz-Fernández A.C.,Alonso-Rodríguez R.,等. Anthropogenic and natural impacts in the marine area of influence of the Grijalva – Usumacinta River (Southern Gulf of Mexico) during the last 45 years[J],2020,156.
APA	Machain-Castillo M.L..,Ruiz-Fernández A.C..,Alonso-Rodríguez R..,Sanchez-Cabeza J.A..,Gío-Argáez F.R..,...&Pérez-Bernal L.H..(2020).Anthropogenic and natural impacts in the marine area of influence of the Grijalva – Usumacinta River (Southern Gulf of Mexico) during the last 45 years.Marine Pollution Bulletin,156.
MLA	Machain-Castillo M.L.,et al."Anthropogenic and natural impacts in the marine area of influence of the Grijalva – Usumacinta River (Southern Gulf of Mexico) during the last 45 years".Marine Pollution Bulletin 156(2020).